- delayed_paperclip 407 Process your Paperclip attachments in the background with delayed_job or Resque.
- spin 388 Spin speeds up your Rails testing workflow by preloading your Rails environment.
- shirt 92 SHell In Ruby? Totally!
- kitabu 48 A framework for creating e-books from Markdown/Textile text markup using Ruby. Using the Prince PDF generator, you'll be able to get high quality PDFs.
- sprout 27 Sprout is an evented IO system written in pure Ruby.